Manufacture of tubes of paper or like material



Sept. 6, 1932. E. z. TAYLOR MANUFACTURE OF TUBES 0 Original Filed March27. 1929 F PAPER OR LIKE MATERIAL Fla. 4 4.5 A

Mill/1"W Patented Sept. 6, 1932 PATENT: OFFICE ELMER ZEIBLEY TAYLOR, OFNEWARK, NEW JERSEY MANUFACTURE OF TUBES OF PAPER OR LIKE MATERIALApplication filed March 27, 1929, Serial No. 350,895. Renewed July 15,1982.

In the specification of an application for patent Serial No. 350,396,filed March 27 1929, in the name of Cyrus Taylor, an invention isdescribed relating to the manufacture of convolutely wound tubes ofpaper or like material, such invention enabling the manufacture to becarried on practically continuously, that is to say Without interruptionduring the feed of the material from a reel. The.

in object of the present invention is to enable an improved result to beobtained, particularly in connection with the method and means describedin the said application of Cyrus Taylor although as will be seen thepresent im- 18 provements' may be applied in other cases.

In the accompanying drawing :Fig. 1 is a horizontal section of a tubeformed in accordance with the present invention. Fig. 2 is adiagrammatic view of part of the ma- 20 chine showing the application ofthe present invention. Fig. 3 is an enlarged view of the mechanism forefi'ecting the particular object sought to be attained, and Fig. 4 astill further enlarged section showing the eifect obtained thereby onthe material employed. Fig. 5 shows a modification of the arrangementshown in Fig. 3, and Fig. 6 the efl'ect produced on the material by themodified arrangement shown in Fig. 5.

Referring to Fig. 1 of the drawing it will be seen that the walls of thetube are there shown as consisting of two convolutions 1, 2, of thepaper or other similar material. The object of the present invention isto avoid the unevenness in the surfaces-of the finished article whichwould arise through the natural thickness of the paper, this objectbeing attained by applying considerable crushing pressure to the ends ofthe blanks in such a manner that the material thereof is tapered oil? tocomparative thinness, without being actually severed thereby. As abovestated the present improvement has been particularly designed for use inconnection with the method of and mechanism for the manufacture of papertubes described in the specification of the application of Cyrus Taylorhereinbeforereferred to, and Fig. 2 of the accompanying drawingillustrates that part of the so machine described therein to which theparts for effecting the object now sought to be attained are added. Suchadditional parts consist of a pair of rollers 40, 41, disposed at asuitable point between the reel 7 from which the web of paper or othermaterial is unwound and the pasting roller 8 by which the necessaryadhesive is applied thereto.

The rollers 40, 41, are rigidly mounted in respect to each other, andare driven in such relation with the other parts of the machine 6 as tomake a complete revolution as the proper length for the desired blankpasses. Such rollers do not act to pull or feed the paper forward, but,as shown in Fig. 3, one of them (41) is provided with a hard steelinsert or projecting part 42 which, as the paper web A passes the centreline between the rollers 40, 41, indents the material with such pressurethat it assumes the section shown (greatly enlarged) 'in Fig. 4, thesloping surfaces 43 tapering down to the point 44 without actuallysevering the material. A modification of this arrangement is shown inFig. 5, where both rollers 40, 41, are provided with steel inserts orprojecting parts 42, the effect 7 of which will be that the Webofmaterial will be impressed to the formation shown in section (alsogreatly enlarged) in Fig. 6, that is the inclined surfaces 43 are formedon both sides of the material so that the latter is tapered down fromboth sides to. the thinnest point 44.

As described in the said Cyrus Taylors application means are providedfor breaking or severing the web into suitable lengths after the pastingoperation and during'the winding of the material on one of a series ofmandrels 16, such breaking or severing mechanism consisting of an arm 23which is operated at a suitable time. In applying this arrangement inconnection with the improvement sought to be covered in the presentapplication the breaker arm 23 is caused to op- 'erate at such a timethat its operating end 1 will come in contact with the web of material Aat its thinnest point, that is to say at the point 44 produced by theaction of the steel inserts carried by one or both of the rollers 40,41. The crushing operation to which the web, has been subjected willfacilitat/e the breaking of it at the desired point. It will of coursebe understood that the crushing operation must not be such as toactually break the material, as this would interfere with the subsequentoperation of the machine, but only sufiicient to obtain the desiredeffect of a blank with tapered ends, enough material being left at thethinnest point to give the web sufficient strength to be carried alonginto the machine.

The subsequent operations on the severed blank do not form part of thepresent invention, but may be similar to those described in theapplication of Cyrus Taylor hereinbefore referred to; In Fig. 1 of thedrawing a rolled-up blank which has been treated as above described isshown, and the improved result attained by the present invention will.be apparent, there being a practically smooth surface on both the innerand outer sides of the article, instead of the ledges which wouldotherwise be presented bythe natural edges of the material. It will bereadily understood that the tubes may consist of more than twoconvolutions of the material, and also that they may be of square,hexagonal or other form instead of circular as shown.

What I claim and desire to secure by'Letters Patent is 1. In atube-making machine, a pair of rollers between which material for makinga tube is passed, one of such rollers being pro vided with a projectingpart co-acting with the surface of the other roller to taper off thematerial by crushing the same.

2. In a tube-making machine, a pair of rollers between which materialfor making a tube is passed, both of such rollers being provided withprojecting parts which operate together to crush the material and thustaper off the ends of the blanks to be formed.

In witness whereof I have signed this specification. v

y ELMER ZEBLEY TAYLOR.

